Preparation method of ultrahigh molecular weight polyethylene fiber
An ultra-high molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin man-made filament, spinning solution preparation, wet spinning, etc. structure and other problems, to achieve the effect of reducing the breaking strength and reducing the dosage
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[0012] See figure 1 with figure 2 The main difference between the method of the present invention and the method of the prior art is that the present invention performs a primary drafting and a secondary drafting in sequence before extraction. Among them, the multiple of the primary drafting can be 2 to 8 times, and the multiple of the secondary drafting can be 1.1 to 3 times, and the thermal drawing multiple of the present invention is lower than the prior art, and the range is 30 to 45. Therefore, the fiber obtained in the present invention has a lower fineness while still maintaining a higher breaking strength. The present invention will be further described in detail below in conjunction with specific embodiments.
[0013] A preparation method of ultra-high molecular weight polyethylene fiber includes the following steps:
[0014] (1). Preparation of frozen collagen filaments of ultra-high molecular weight polyethylene: UHMWPE (viscosity average molecular weight 4.5 million)...
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